Examples of io.netty.buffer.ByteBuf.writeZero()

io.netty.buffer.ByteBuf.writeZero()
Fills this buffer with NUL (0x00) starting at the current {@code writerIndex} and increases the {@code writerIndex} by thespecified {@code length}. @param length the number of NULs to write to the buffer @throws IndexOutOfBoundsException if {@code length} is greater than {@code this.writableBytes}

        writePaddingLength(padding, frame);


        frame.writeBytes(fragment);


        // Write out the padding, if any.
        frame.writeZero(padding);
        return frame;
    }


    /**
     * Writes the padding length field to the output buffer.

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            // Write the data.
            out.writeBytes(data, data.readerIndex(), data.readableBytes());


            // Write the required padding.
            out.writeZero(padding);
            return ctx.write(out, promise);
        } catch (RuntimeException e) {
            return promise.setFailure(e);
        } finally {
            data.release();

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            // Write the first fragment.
            firstFrame.writeBytes(fragment);


            // Write out the padding, if any.
            firstFrame.writeZero(padding);


            if (headerBlock.readableBytes() == 0) {
                return ctx.write(firstFrame, promise);
            }

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            // Write the first fragment.
            firstFrame.writeBytes(fragment);


            // Write out the padding, if any.
            firstFrame.writeZero(padding);


            if (flags.endOfHeaders()) {
                return ctx.write(firstFrame, promise);
            }

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        final String repeatedData = "0123456789";
        final ByteBuf buffer = Unpooled.buffer(size + padding);
        for (int index = 0; index < size; ++index) {
            buffer.writeByte(repeatedData.charAt(index % repeatedData.length()));
        }
        buffer.writeZero(padding);
        return buffer;
    }


    private static void manualSafeRelease(ByteBuf data) {
        while (data.refCnt() > 0) { // Manually release just to be safe if the test fails

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            // Write the data.
            out.writeBytes(data, data.readerIndex(), data.readableBytes());


            // Write the required padding.
            out.writeZero(padding);
            return ctx.write(out, promise);
        } catch (RuntimeException e) {
            return promise.setFailure(e);
        } finally {
            data.release();

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            // Write the first fragment.
            firstFrame.writeBytes(fragment);


            // Write out the padding, if any.
            firstFrame.writeZero(padding);


            if (headerBlock.readableBytes() == 0) {
                return ctx.write(firstFrame, promise);
            }

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            // Write the first fragment.
            firstFrame.writeBytes(fragment);


            // Write out the padding, if any.
            firstFrame.writeZero(padding);


            if (flags.endOfHeaders()) {
                return ctx.write(firstFrame, promise);
            }

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        writePaddingLength(padding, frame);


        frame.writeBytes(fragment);


        // Write out the padding, if any.
        frame.writeZero(padding);
        return frame;
    }


    /**
     * Writes the padding length field to the output buffer.

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        ByteBufUtils.writeVarShort(buf, 32766);
        assertArrayEquals("Two byte short written", new byte[] { 127, -2, 0}, buf.array());
        assertEquals("Two byte short written", 2, buf.readableBytes());


        buf.clear();
        buf.writeZero(3);
        buf.clear();


        buf.writeShort(32766);
        assertArrayEquals("Two byte short written", new byte[] { 127, -2, 0}, buf.array());
        int val = ByteBufUtils.readVarShort(buf);

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